Alert archive / California / Flash Flood Warnings in 2020
Flash Flood Warning 2, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Mar 12, 2020, 3:26 PM PDT for San Bernardino County, California. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 12, 2020, 3:26 PM PDT (22:26 UTC)
- Expired
- Mar 12, 2020, 6:30 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 171 km from the middle of the area, began a volume at 22:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 12, 5:10 PM PDT | FLASH FLOOD | 1 Wsw Vidal Junction, CA | MULTIPLE VEHICLES ARE STUCK OR STRANDED DUE TO FLOODING NEAR THE INTERSECTION OF STATE ROUTE 62 AND US 95. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Yuma Prvg Ground, AZ (K1Y7), launched 12:00Z, 10.4 hours before the alert went out and 187 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 209 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 481 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
805
WGUS55 KVEF 122226
FFWVEF
CAC071-130130-
/O.NEW.KVEF.FF.W.0002.200312T2226Z-200313T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
326 PM PDT Thu Mar 12 2020
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Southeastern San Bernardino County in southern California...
* Until 630 PM PDT.
* At 323 PM PDT, law enforcement reported roadway flooding along
Highway 62 near Vidal Junction where a vehicle is reportedly stuck
in the roadway. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Life threatening flash flooding. Heavy rain producing
flash flooding.
SOURCE...Law enforcement.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flooding include...
Big River, Earp and Vidal Junction.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3425 11514 3427 11459 3417 11428 3414 11432
3411 11441 3408 11444 3408 11514
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CK1 follow-up statement
825
WGUS75 KVEF 130124
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
624 PM PDT Thu Mar 12 2020
CAC071-130131-
/O.EXP.KVEF.FF.W.0002.000000T0000Z-200313T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
624 PM PDT Thu Mar 12 2020
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SAN BERNARDINO COUNTY
WILL EXPIRE AT 630 PM PDT...
The heavy rain has ended. New flooding is no longer expected to pose
a threat. Please continue to heed any remaining road closures.
LAT...LON 3425 11514 3427 11459 3417 11428 3414 11432
3411 11441 3408 11444 3408 11514
$$The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 2:54 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Mar 12, 4:07 PM PDT | Flash Flood Warning | VEF | San Bernardino | 4 hr |
| Mar 12, 4:32 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2020Every flash flood warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.